Vacuum-Compatible Radial Ball Bearing for Semiconductor Crystal Grinders from Japan
Radial ball bearing with dry lubricant for vacuum chamber crystal grinders in semiconductor production. Falls under HTS 8482.10.5064 as other radial bearing. Eliminates hydrocarbon outgassing critical for float zone crystal growth.
Duty Rate — Japan → United States
34%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16, 9903.82.20–9903.82.26 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) and (xi) of U.S. note 16 to this subchapter
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Provide bake-out test results proving <10^-8 torr partial pressure compatibility
• Specify ID/OD tolerances to ±1µm for spindle alignment in grinders
• Include conflict minerals declaration for tantalum in hybrid bearings